[js1138]

The galaxy is 100,000 light years across, and we live in a portion of it that is somewhat more rarefied than average.

But is life (as we know it) possible in the denser portions of the galaxy?

[Valin]

life (as we know it)

Ever read any David Brin?

[Physicist]

But is life (as we know it) possible in the denser portions of the galaxy?

I myself am not wedded to carbon-based, cellular life forms, if that's what you mean. I see no reason to posit that a civilization is more likely in a place where we ourselves would be more comfortable. Besides, if we found an intelligent signal in the "dead zone", we wouldn't disregard it on the grounds of location.